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AD7192是一款适合高精密测量应用的低噪声完整模拟前端。它集成一个低噪声、24位Σ-Δ型模数转换器(ADC)。此篇主要介绍了AD7192特性、应用范围、参考设计电路以及电路分析，帮助大家缩短设计时间。

AD7192特性：稳定的时间漂移特性；自动通道序列器；可编程增益（1至128）；无噪声分辨率高达22位(G=1)

AD7192典型应用范围：电子秤；应变计传感器；医疗与科学仪器；温度测量

AD7192参考设计应用电路：

图1AD7192内部结构图

TheAD7192 is a low noise, complete analog front end for high precision measurement applications. It contains a low noise,24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC).The on-chip low noise gain stage means that signals of small amplitude can be interfaced directly to the ADC.

图2AD7192参考设计图

TheAD7192 is an ultralow noise ADC that incorporates a Σ-Δ modulator, a buffer, PGA, and on-chip digital filtering intended for the measurement of wide dynamic range signals such as those in pressure transducers, weigh scales, and strain gage applications.

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